# directionX

> Apply a linear force along the local X axis to particles within the volume of the Force Field.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.3/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public ParticleSystem.MinMaxCurve directionX { get; set; }
```

### Remarks

Additional Resources: [ParticleSystemForceField](/engine/6000.3/script-reference/unityengine/particlesystemforcefield.md).